Det. Chief Insp. Barlow is on the trail of counterfeit money circulating around Newtown. Meanwhile Steele and Lynch are tracking Ralph Nolan before he kills his father.
When Clara Smales and Hughie Tattersall are robbed gun point but Det. Chief Insp. Barlow is suspicious about the cash stolen believing it's money her jailed husband stole.
Stephen Peake stages a break in, rings the police and blames his neighbour Eric Clifford hoping that Sgt Watt will be sued for wrongful arrest but things go wrong.
Det. Chief Insp. Rawlings and Det. Chief Insp. Barlow lead the inquiry into the murder of an 8-year-old boy. PC's Weir and Smith are tasked with finding a green bike.
Fancy Smith makes a friendly visit, to the father of young smoker Lonnie Charlton, a disturbed man with a big secret. WPC Stacey befriends a small child who has been spanked by a mysterious stranger.
A ship coming from Gibraltar is quarantined for a possible smallpox outbreak. Two sailors disobey orders and head for shore. Seaport is on high alert to find them as soon as possible.
A pickpocket gang, known as Whizzers, are working at sporting events in Seaport. PC Jock Weir is reported for swearing at a member of the public and faces disciplinary action.
When Martin Davis fails to turn up for his father's inquest PC's Smith and Weir are sent to get him. On arrival Davis is waiting with a shotgun, shooting Weir and injuring Smith.
